US Business Entity Search 🏢

Search US state business & corporation registries — New York, Colorado, Connecticut and Delaware — straight from official state open-data portals. No API key, no proxy.

Find registered companies across multiple US states in one run: entity name, ID, type, status, formation/registration date, address, and — where the state publishes it — the registered agent's name and address. Filter by name, entity type, status, city, or formation date.

Perfect for B2B lead generation (reach newly formed companies), sales prospecting, KYC/due-diligence, supplier-diversity sourcing, and market research.

Data comes from each state's official open-data portal (Socrata). Public business-registry records. No key required (an optional free Socrata app token raises rate limits).

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Supported states

State	Registry	Highlights
New York	Active corporations (4.2M+)	Entity name, type, county, DOS process agent + address
Colorado	Business entities	Status, entity type, registered agent name + address, formation date
Connecticut	Business registry master	Status + woman / veteran / minority / LGBTQ-owned flags
Delaware	Business licenses	License category, validity dates, address

One normalized schema across all of them — mix and match states in a single run.

Features

• ✅ No API key, no proxy — official open-data APIs, very low maintenance.
• ✅ Newly formed companies — set registeredAfter to get fresh business leads.
• ✅ Registered agent data — Colorado & NY carry agent name/address (great for outreach).
• ✅ Supplier diversity — Connecticut woman/veteran/minority/LGBTQ-owned filter.
• ✅ Normalized output — same fields for every state; optional raw record included.

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Input

Field	Description
States	Which registries to search (default: all four).
Entity name contains	Filter by company-name text.
Entity type contains	Filter by type text (see note below on state phrasing).
Status contains	Filter by status (e.g. "good standing").
City	Filter by city (where the state exposes it).
Registered/formed after / before	Formation-date range (YYYY-MM-DD).
Diversity-owned only (CT)	Connecticut: only woman/veteran/minority/LGBTQ-owned.
Keyword	Full-text search across all columns (works on every state).
Max results per state	How many entities per selected state.

Entity-type phrasing differs by state. Colorado uses codes like DLLC; New York spells it out (DOMESTIC LIMITED LIABILITY COMPANY, DOMESTIC BUSINESS CORPORATION). Use LLC for Colorado, LIMITED LIABILITY for New York, or use the broad keyword field.

Example — brand-new Colorado LLCs (lead gen)

{
  "states": ["co"],
  "entityTypeContains": "LLC",
  "registeredAfter": "2025-01-01",
  "maxResultsPerState": 1000
}

Example — Connecticut minority-owned businesses

{
  "states": ["ct"],
  "diversityOwnedOnly": true,
  "maxResultsPerState": 500
}

Output

{
  "state": "CO",
  "source": "Colorado",
  "entity_name": "Redline Lighting LLC",
  "entity_id": "20261862530",
  "entity_type": "DLLC",
  "status": "Good Standing",
  "formation_date": "2026-07-16",
  "jurisdiction": "CO",
  "address": "3684 G 4/10 Rd",
  "city": "Palisade",
  "region_state": "CO",
  "zip": "81526",
  "agent_name": "QUINN RIDDELL-BROSIG",
  "agent_address": "3684 G 4/10 Rd Palisade CO 81526",
  "source_domain": "data.colorado.gov",
  "dataset_id": "4ykn-tg5h"
}

Field availability varies by state (e.g. Connecticut carries diversity-ownership flags; New York carries county; Delaware carries license validity dates).

Run it on a schedule

Set registeredAfter to yesterday and run daily to get a steady feed of newly registered companies — pipe them to a CRM, Google Sheets or a webhook for a continuously refreshed prospect list.

Notes & limitations

• Official state open-data registries — public business records.
• Coverage = the states listed above (those that publish clean open data). The US has no single federal company registry, so this is multi-state by design; more states can be added.
• Some filters only apply where a state exposes the matching column (documented above).
• Data freshness depends on each state's own publishing cadence.

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Keywords

US business entity search, business registry, company registry, corporation search, LLC search, registered agent, new business leads, B2B lead generation, sales prospecting, KYC, due diligence, secretary of state, New York corporations, Colorado business entities, Connecticut business registry, Delaware business licenses, company data, business data, open data, Socrata, supplier diversity, minority owned business.